I have a renter who would like to hang this from a bar joist in my black box. He claims it weighs 150lbs. We don't do a lot of rentals and I've never had anyone ask to do anything like this so we don't have a policy in place. I'm really not comfortable letting someone [read: not a certified rigger] hang some 150lb. home made contraption over a crowd of people. To the question: How do you deal with this kind of request? A simple, "no, you can't do that" or "it must be inspected and hung by a certified rigger at your expense". **this is my first attempt at inserting a photo into a post. I apologize if it didn't work. I will do my best to fix it quickly.